The condensed, liquid refrigerant, while in the thermodynamic condition referred to as a saturated liquid, is future routed by means of an enlargement valve in which it undergoes an abrupt reduction in tension. That stress reduction brings about the adiabatic flash evaporation of a Section of the liquid refrigerant. Also, https://purethermal.co.uk/media-news/can-gas-absorption-heat-pumps-provide-an-alternative-heat-pump-option-in-2025/